Rice-hulling machine



(No Model.) I

. B. DENNEY.

- RICE HULLING MACHINE. N0. 256,653. Patented Apr. 18, 1882.

INVBNTOR WITNESSES: [4 W7? /0 BY IJXMMM 7 04 ATTORNEYS.

. UNITED STATES PATENT OFFICE.

SHAD 1;. manner, or SUMMIT, MISSISSIPPI.-

RlCE-HULLING MACHINE.

SPECIFICATION forming part of Letters rate -No. 256,653, dated. April 18, 1882, v Application filed January 4, 1852. (No model.)

usefullmprovementin Rice-Hailing Machines,

of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part .of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a plan view of my improvement, the hopper being removed. Fig. 2 is a side elevation of the same, partly in section. Fig. 3 is an end elevation of the 'same, partly in section.

The object of this invention is to facilitate the operation of hulling rice.

The invention consists in a rice-hullin g machine constructed of a frame, a corrugated cylinder, curved, rabbeted,and grooved plates fitting against the said cylinder, and having strel plates inserted in their grooves; also, in the combination, with the curved plates, grooved and rabbeted upon their inner surfaces, of steel plates, whereby the inner parts of the said steel plates will be free to vibrate; and also in the combination, with the curved, rabbeted, and grooved plates carrying the steel plates, of a hand-screw and a cross head or bar, whereby the said curved plates can be adjusted to bring the edges of the steel plates closer to or farther from the face of the corrugated cylinder, as will be hereinafter fully described.

A represents the frame of themachine, to the side bars of which is journaled a drum or cylinder, B. The face of the cylinder B is corrugated or grooved longitudinally, the surface of the projecting ridges being rounded ofi or made of oval form, and the sides of the said ridges meet at an angle, as shown in Fig. 2.

To one journal of the cylinder B is attached a crank, G, by means of which the said cylinder is revolved. To the side bars of the frame A, at the opposite sides of the forward part of the cylinder B, are attached two standards, 1), to and between the upper ends of which are suspended and hinged by a rod or bolt,E, the upper ends of two parallelbar's or plates,

F. The plates F are made in the form of anported by suitable means, and the steel plates :00

nular sections, and are connected and held in proper relative position by the rod or bolt E at their upper ends and the bolt G at their lower ends.

'In the inner surfaces of the plates F are formed grooves'to receive the edges of steel plates H, the said grooves being so arranged that the upper plate H will be nearly vertical and the lower plate H nearly horizontal. The inner surfaces of the curved plates F, along their concave edges, are rabbeted to a depth a little greater than the depth of the grooves in the said plates, as shown-in Fig. 3, so that the inner parts of the plates H will be free to vibrate.

In a screw-hole in a cross-bar of the frame A is placed a hand-screw, I the forward end of which rests against or is swiveled to a cross head or bar, J, which rests against or is attached to the lower parts of the outer or convex edges of the curved plates F, so that the curved plates F and their spring-plates H can be held closer to or farther from the face of the cylinder B, as may be desired. The cylinder B, the curved plates F, and the spring-plates H may be inclosed in a casing, and the rice to be hulled is fed into the machine through a hopper attached to the said casing or to a suitable supporting-frame.

The position of the feed-hopper is indicated in dotted lines in Fig. 2. The hulled rice and chaff can. be received in a box or other receptacle placed beneath the machine. With this construction, as the cylinder B is revolved the rice is carried around by the corrugations of the said cylinder and passes beneath the inner edges of the spring-plates H. As the inner edge of each 'plate H is passed by a ridge of the cylinder B the elasticity of the said plate causes its lower part to spring back and pull or tear the hulls from the kernels of rice that are in the corrugations of the said cylinder B, so that the rice will be quickly and thoroughly hulled.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a'rice-hulling machine, the combination, with the corrugated cylinder B, of the curved, rabbeted, and grooved plates F, sup- H,substantiallyasherein shown and described, tion, with the curved, rnbbeted, and grooved whereby the hulls will be removed from the rice plates F, supported by suitable means, carryby the action of the said spring plates, as set ing the steel plates H, of the hand-screw I and r5 forth. the cross head or bar J, substantially as herein i 5 2. In a rice-hulling machine, the coinbinsshown and described, whereby the said curved tion, with the curved plates F, supported by plates'can be adjusted to bring the edges of suitable means, grooved and rabbeted upon the steel plates closer to or farther from the their inner surfaces, of the steel plates H, subface of the corrugated cylinder, as set forth.

stantiallyashereinfshownanddescribed,where- SHAD B. DENNEY. to by the inner parts of the said steel plates will Witnesses:

be free to vibratems set forth. JOHN J. CAIN,

3. In a rice-hulling machine, the COlllblllEt- 1 JOHN H. MARSH. 

